Lab values & electrolytes worksheet with answers

What does the term pancytopenia mean?

1. ALow red cells with normal platelets
2. BHigh white cells with low platelets
3. CLow red cells, white cells and platelets
4. DHigh red cells, white cells and platelets

At what time of day is serum cortisol normally highest?

1. AAround midnight
2. BEarly morning
3. CAfter the evening meal
4. DLate afternoon

Which blood group is the universal donor for red blood cells in an emergency?

1. AGroup AB, Rh positive
2. BGroup B, Rh positive
3. CGroup O, Rh negative
4. DGroup A, Rh negative

A patient on peritoneal dialysis notices that the drained fluid is cloudy and has abdominal pain. What should the nurse do?

1. AStop dialysis for a week and recheck the fluid later
2. BAdd more glucose to the next bag to clear the fluid
3. CRecord it as normal and continue the usual exchanges
4. DSend the fluid for cell count and culture and report it

A patient's eGFR has fallen to 24 mL/min/1.73 m². Which prescribed drug should the nurse question before giving it?

1. AMetformin
2. BAcetaminophen (paracetamol)
3. CLevothyroxine
4. DInsulin glargine

A patient taking warfarin for atrial fibrillation has an INR of 5.2 and no bleeding. What is the nurse’s best action?

1. AAdvise the patient to stop eating green vegetables from today
2. BGive the usual dose and recheck in a month
3. CHold the warfarin dose and inform the prescriber
4. DGive a double dose

A patient with suspected Cushing syndrome takes dexamethasone at night. The next morning, the cortisol is still high. What does this suggest?

1. AThe adrenal glands are not able to produce enough cortisol
2. BThe result is normal, as dexamethasone raises cortisol
3. CCortisol is being produced without normal feedback control
4. DThe patient has primary hypothyroidism instead

A patient with diabetes and chronic kidney disease had a CT scan with IV contrast. Two days later, the creatinine has risen from 1.4 to 2.0 mg/dL (124 to 177 µmol/L). Which action is most appropriate?

1. ARestrict all fluids to protect the kidneys from more contrast
2. BReport it, monitor urine output and hold metformin until reviewed
3. CGive extra metformin, because the glucose rises after contrast
4. DIgnore it, because contrast never affects kidney function